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0441C0174-1 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

0441C0174-1: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL, head_style: FLAT CHAMFER, head_height: 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, thread_length: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-359-9446, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
0441C0174-1
NSN: 5305-01-359-9446
FSC: 5305 — Screws
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
head_styleFLAT CHAMFER
head_height0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
thread_length0.438 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.402 INCHES MINIMUM AND 1.406 INCHES MAXIMUM IN
shoulder_length0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER IN
width_across_flats0.156 INCHES NOMINAL IN
NSN5305-01-359-9446
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 0441C0174-1 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.156 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.402 INCHES MINIMUM AND 1.406 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.438 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.156 INCHES NOMINAL IN
HEAD HEIGHT0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
FASTENER LENGTH1.402 INCHES MINIMUM AND 1.406 INCHES MAXIMUM IN
SHOULDER LENGTH0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.438 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT CHAMFER
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
250-20UNC-3AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 0441C0174-1?
0441C0174-1 is a SCREW,SHOULDER.
What parts can replace 0441C0174-1?
There is 1 known substitute for 0441C0174-1: 250-20UNC-3A. Substitute compatibility should be verified for your specific system.
What is the NSN for 0441C0174-1?
0441C0174-1 is cataloged in the U.S. Government catalog under NSN 5305-01-359-9446. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.